La un magazin s-a produs o reducere de preturi de 20%.
Un tricou costa dupa reducere 64 de lei. Ce pret avea inainte de reducere?

80

Step-by-step explanation:

Incepe sa faci 100%-20% =80%

80:100=64:x

x= 64 x 100/80= 80

you would use (d.) the law of cosines or a^2 = b^2 + c^2 – 2bc(cos a)

, b^2 = a^2 + c^2 – 2ac(cos b), or c^2 = a^2 + b^2 - 2ab(cos c). you wouldn't use b. the law of sines as it is mostly effective when 1side and 2angles are given. a and c aren't the answer for they are the improper versions of the law of cosines. hope this is .

c

step-by-step explanation:

it would be see because your formula is f(x)=6x, so 6 times 1 is 6 and you go on and the best answer is c.